221022201122 has 4 divisors (see below), whose sum is σ = 331533301686. Its totient is φ = 110511100560.

The previous prime is 221022201097. The next prime is 221022201131. The reversal of 221022201122 is 221102220122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 220769359321 + 252841801 = 469861^2 + 15901^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221022201122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55255550279 + ... + 55255550282.

Almost surely, 2^221022201122 is an apocalyptic number.

221022201122 is a deficient number, since it is larger than the sum of its proper divisors (110511100564).

221022201122 is a wasteful number, since it uses less digits than its factorization.

221022201122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110511100563.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221022201122 its reverse (221102220122), we get a palindrome (442124421244).

The spelling of 221022201122 in words is "two hundred twenty-one billion, twenty-two million, two hundred one thousand, one hundred twenty-two".